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96fc83aeac
Original commit message from CVS: Interface implementation example: OSS mixer. Also osscommon->osselement so it can be loaded without being a source/sink (for a stand-alone mixer)
113 lines
3 KiB
C
113 lines
3 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wim.taymans@chello.be>
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*
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* gstosselement.h:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_OSS_ELEMENT_H__
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#define __GST_OSS_ELEMENT_H__
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#include <gst/gst.h>
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G_BEGIN_DECLS
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#define GST_TYPE_OSSELEMENT \
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(gst_osselement_get_type())
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#define GST_OSSELEMENT(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OSSELEMENT,GstOssElement))
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#define GST_OSSELEMENT_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OSSELEMENT,GstOssElementClass))
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#define GST_IS_OSSELEMENT(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OSSELEMENT))
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#define GST_IS_OSSELEMENT_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OSSELEMENT))
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typedef struct _GstOssElement GstOssElement;
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typedef struct _GstOssElementClass GstOssElementClass;
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typedef enum {
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GST_OSSELEMENT_READ,
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GST_OSSELEMENT_WRITE,
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} GstOssOpenMode;
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struct _GstOssElement
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{
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/* yes, we're a gstelement too */
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GstElement parent;
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gchar *device,
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*mixer_dev;
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/* device state */
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int fd;
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int caps; /* the capabilities */
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gint format;
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gint fragment;
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guint64 fragment_time;
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gint fragment_size;
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GstOssOpenMode mode;
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/* stats */
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guint bps;
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/* parameters */
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gint law;
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gint endianness;
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gboolean sign;
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gint width;
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gint depth;
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gint channels;
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gint rate;
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/* mixer stuff */
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GList *channellist;
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guint32 stereomask,
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recdevs,
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recmask,
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mixcaps;
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gint mixer_fd;
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};
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struct _GstOssElementClass {
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GstElementClass klass;
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};
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GType gst_osselement_get_type (void);
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/* factory register function */
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gboolean gst_osselement_factory_init (GstPlugin *plugin);
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/* some useful functions */
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gboolean gst_osselement_parse_caps (GstOssElement *oss,
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GstCaps *caps);
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gboolean gst_osselement_merge_fixed_caps (GstOssElement *oss,
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GstCaps *caps);
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gboolean gst_osselement_sync_parms (GstOssElement *oss);
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void gst_osselement_reset (GstOssElement *oss);
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gboolean gst_osselement_convert (GstOssElement *oss,
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GstFormat src_format,
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gint64 src_value,
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GstFormat *dest_format,
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gint64 *dest_value);
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G_END_DECLS
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#endif /* __GST_OSS_ELEMENT_H__ */
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